The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for.

Wiseco Wiseco 4 Stroke Forged Series Piston Kit, 101.00 mm Bore, 9.9:1 CR 4966M10100

Specifications:

Description_DEF	Engine Piston
Description_DES	Yam YFM660 Raptor/Grizzly/Rhino 9.9:1 CR
Description_EXT	Wiseco 4 Stroke Forged Series Piston Kit, 101.00 mm Bore, 9.9:1 CR
Description_FAB	Engineered, forged, and machined in the USA in Mentor, OH Designed and built for each specific 4-stroke powersports engine Improved tensile strength of forged material optimizes strength and service life Dedicated forgings allow for optimized strength-to-weight ratio Includes high-quality piston rings, wrist pin(s), and circlips
Description_INV	Yam YFM660 Raptor/Grizzly/Rhino 9.9:1 CR
Description_MKT	The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for.
Description_SHO	Piston Kit
Description_TLE	Wiseco 4 Stroke Forged Series Piston Kit, 101.00 MM Bore, 9.9:1 CR

This Part Fits:

Year	Make	Model	Submodel	Notes
2002	Yamaha	YFM660F Grizzly 4x4
2003	Yamaha	YFM660F Grizzly 4x4
2004	Yamaha	YFM660F Grizzly 4x4
2005	Yamaha	YFM660F Grizzly 4x4
2006	Yamaha	YFM660F Grizzly 4x4
2007	Yamaha	YFM660F Grizzly 4x4
2008	Yamaha	YFM660F Grizzly 4x4
2005	Yamaha	YXR66F Rhino 660
2006	Yamaha	YXR66F Rhino 660
2007	Yamaha	YXR66F Rhino 660
2006	Yamaha	YXR66F Rhino 660 Exploring Edition
2007	Yamaha	YXR66F Rhino 660 Exploring Edition
2006	Yamaha	YXR66F Rhino 660 Special Edition
2007	Yamaha	YXR66F Rhino 660 Special Edition